What is so good about the patented CPR advisor technology that is found on the HeartSine Samaritan 500P?

This technology has been developed by specialist research into a whole host of parameters that are used to monitor CPR effectiveness in real time - things such as End-Tidal CO2, Cardiac Output, Carotid Flow and Impedance Cardiogram. These are the things an advanced life saver with all the right gear would normally do - however it has all been correlated into this simple device for the lay rescuer. It simply tells you to push harder or push faster, or that you are doing good compressions. And it is specific, in real-time, to the victim. So it will advise the correct compressions for a big victim, just as it will do so for a smaller victim. (Please note, this CPR advisor technology automatically is disabled when the paediatric pad-pak is used ie for children 1 to 8 yrs, or up to 25kg)